一个四坐标的酸复合物的多功能反应性:减少,添加和CO激活反应
Yingdong Lv1, Christos E Kefalidis, Jiliang Zhou
1State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Road, Shanghai 200032, People's Republic of China.
Journal of the American Chemical Society
|September 6, 2013
概括
一种新型的酸复合物表现出多功能反应性,与各种基质进行降解以形成二酸联体. 它还与不和化合物反应并激活CO,产生独特的含产品.
科学领域:
- 有机金属化学 有机金属化学
- 主群 化学 化学
- 协调化学 协调化学
背景情况:
- 复合物以其独特的反应性而闻名.
- 素复合物是反应性中间体,可以通过金属协调来稳定.
- 了解低坐标主组元素复合物的反应性对于开发新的合成方法至关重要.
研究的目的:
- 为了合成和表征一个四坐标的酸复合物.
- 为了研究这个复合体与各种基质的反应性.
- 探索新的反应途径和产品形成,包括CO激活.
主要方法:
- 合成和描述的酸酸复合物[LSc(μ-PAr]2.2.
- 用基质进行反应性研究,包括双胺,元素石化,硫化/化,不和有机分子和金属碳基.
- 密度函数理论 (DFT) 计算以阐明反应机制,特别是异化物插入和CO激活.
主要成果:
- 复合物[LSc(μ-PAr) ]2在良好的产量中进行了合成.
- 该复合物经历了与各种基质的双电子还原,导致二二联体的形成.
- 观察到与不和基质的核性添加反应和与CO和Mo (CO) 6的新型反应性,包括C-P键形成和C-O键裂解.
- DFT的计算揭示了CO激活的意想不到的反应途径.
结论:
- 四坐标的酸复合物表现出高和多功能反应性.
- 该复合物作为二二联体的前体,并参与与不和基质和一氧化碳的独特转化.
- 计算研究为复杂的反应机制提供了洞察力,突出了新含化合物合成的潜力.
相关概念视频
Cycloaddition Reactions: Overview
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Pericyclic Reactions: Introduction
Pericyclic reactions are organic reactions that occur via a concerted mechanism without generating any intermediates. The reactions proceed through the movement of electrons in a closed loop to form a cyclic transition state, where rearrangement of the σ and π bonds yields specific products.
Pericyclic reactions can be classified into three categories: electrocyclic reactions, cycloaddition reactions, and sigmatropic rearrangements. Electrocyclic reactions and sigmatropic rearrangements are...
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Cycloaddition Reactions: MO Requirements for Thermal Activation
Thermal cycloadditions are reactions where the source of activation energy needed to initiate the reaction is provided in the form of heat. A typical example of a thermally-allowed cycloaddition is the Diels–Alder reaction, which is a [4 + 2] cycloaddition. In contrast, a [2 + 2] cycloaddition is thermally forbidden.
Radical Reactivity: Overview
Radicals, the highly reactive species, gain stability by undergoing three different reactions. The first reaction involves a radical-radical coupling, in which a radical combines with another radical, forming a spin‐paired molecule. The second reaction is between a radical and a spin‐paired molecule, generating a new radical and a new spin‐paired molecule. The third reaction is radical decomposition in a unimolecular reaction, forming a new radical and a spin‐paired molecule. These three...
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The Diels–Alder reaction is an example of a thermal pericyclic reaction between a conjugated diene and an alkene or alkyne, commonly referred to as a dienophile. The reaction involves a concerted movement of six π electrons, four from the diene and two from the dienophile, forming an unsaturated six-membered ring. As a result, these reactions are classified as [4+2] cycloadditions.
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